I rode s810s for years and have s912s any they're fine.  I'm 6'0 180lbs, assuming because you had yours on a DIN of 6 you must be, what?  120lbs?
So, that said, my bindings take a lot more abuse on a regular basis, about as much as yours would take if you wore a 60lb backpack all the time.  That said, mine are holding up perfectly fine, they're used too, I guess Salomon isn't bad after all eh?  Yep, I guess not.